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Question
Find the square root of the following rational expression
`(121("a" + "b")^8 (x + y)^8 ("b" - "c")^8)/(81("b" - "c")^4 ("a" - "b")^12 ("b" - "c")^4)`
Solution
`sqrt((121("a" + "b")^8 (x + y)^8 ("b" - "c")^8)/(81("b" - "c")^4 ("a" - "b")^12 ("b" - "c")^4)`
= `11/9|(("a" + "b")^4 (x + y)^4 ("b" - "c")^4)/(("b" - "c")^2 ("a" - "b")^6 ("b" - "c")^2)|`
= `11/9|(("a" + "b")^4 (x + y)^4)/("a" - "b")^6|`
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